Rock-drill.



No. 840,816. PATBNTED JAN. s, 1907. .T. E. ADAMS.

ROCK DRILL.

APPLICATION FILED 001224. 1901.

4 SHEETS-SHEET 1 nl: muuu: PzrlR-l co., WAsHmaToN. n, c.

4PATBNTED JAN. s, 1907.

T. B. ADAMS.

ROCK DRILL.

APPLIOATION FILED 0012.4. 1901.

'4 SHEETS-SHEET 2.

' IN VE N T OR I I v Az'lney v l THE no Rms Fermes co., wAsmNooN, D4 c.

PATENTED JAN. 8, 1907.

T. E. ADAMS.- RO'GK DRILL-. APPLICATION FILED 0(}T.A24, 1901.

l1.SHEETS--SHEJSI' 3.

inl. @Wwe NI/ENTOR IJ/ITJVESSESA PATENTED JAN. 8, 1907.-

ROCK DRILL. l APPLIOATION FILEDYooT. 24, 1901.

4 SHEETS-SHEET 4.

rus Nomus rs1-sns ca., wnshmaran, e.

UNITED STATES PATENT OFFIOE.

THOMAS EDGAR ADAMS, OF CLEVELAND, OHIO. ASSIGN OR TO THE ADAMS DRILL COMPANY, OF CLEVELAND, OHIO, A CORPORATION vOF OHIO.

ROCK-DRILL.

Specification of Letters Patent.

i Patented Jan. 8, 1907.

Application filed October 24. 1901. Serial No. 79.832.

To all whom t nfl/ty concern:

Be it known that I,THoMAs EDGAR ADAMs, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Rock-Drills; and I do hereby declarev the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. My invention relates to an improvement in rock-drills, one object of the invention being to construct a rock-d rill in such manner as to reduce the weight to a minimum and yet maintain a maximum amount of strength.

A further object is to so construct a rockdrill that it can be easily operated and manipulated and so that it can be readily transported.

A further object is to construct a rockd rill in such manner that the mechanism shall be compact, that friction shall be reduced to a minimum, and that can be readily andquickly adjusted.

A further object is to provide a simple and efficient feed mechanism.

A further object is to so construct the mechanism -of a rock-drill that the parts thereof can be quickly and accurately assembled.

A further obj ect is to construct the apparatus in such manner that lost motion shall be reduced to a minimum.

A further object is to insure the proper and accurate guiding of the drill-point, to prevent noise, and to give great solid-ity to the whole action of the machine.

A further object is to reduce to aminimum the number of parts of a rock-drill of the class to which my invention relates.

A further object is to increase the surface upon which the recoil will come, and thus give to the apparatus a maximum amount of durability.

With these objects in view the invention consists in certain novel features of construction and combinations and arrangement of parts, as hereinafter set forth, and pointed out in the claims.

In the accom anying drawings, Figure 1 is an elevation o a rock-drill embodying my improvements. Fig. 2 is a longitudinal sectional'view. Fig. 3 is a sectional view on the line of Fig. 1. Fig. 4 is a transverse sectional view on the line y y of Fig. 2. Figs.

,. closed.

5, 6, and 7 are views illustrating details. Fig. 8 is a sectional view illustrating thedriving mechanism. Fig. 9 is a sectional viewV illustrating the ratchet device. .-Fig. 10 is a rear view. Fig. 11 is a sectional view of a portion of the apparatus, showing the-mounting of the feed-operating rod 29. 1 representsa column or standard, preferably tubular in form, provid ed at its upper end f.

with an adjustable head 2 of usual construction. A clamp 3 is adjustably secured7 by means of bolts 4 to the standard 1, and immediately under said clamp a collar 5 is secured to the standard for preventing any possibility of the clamp slipping and to sustain clamp 3 when it is loosened for read justment. The clamp 3 is provided with a laterally-projecting arm 6, (which may be made integral therewith,) and this arm 'supports the drill mechanism, for which purpose a housing 7 is located over the arm 6 andprovided with a depending'clamp 8, secured to said arm by means of a bolt 9. The upper portion of the clamp 8 is made with an. internal groove 10 for the reception of a spline 1f1, secured to the arm 6 by means of a clamp 12,for the purposeof preventing displacementA of :the clamp-.andff the housing 7, from which theclamp depends,

but more particularly to 4permit thexmachine Y.

to be moved to change long drills an'd/ again replaced exactly in its original position. The housing 7 vcarries the drill-operating mechanism, (as will be presentlyA explained ,)r andwby securing it to the arm 6`as above describedv it can be readily adjusted at any desired inclination, as the spline 11 is notmade'rigid with the arm, but is-secured thereto by the clamp 12 in such manner that it can be readily'adjusted to any point throughout the circumference of said arm.

The housing 7 is made `in two parts .hinged together at 13, and at the free edges ofthe parts of the housing bifurcated lugs .14 .15

are provided. In one of these lugs a screw Ioo` movement of the nut when it is rotated.

ends of the housing 7. The feeding-nut 18 is preferably split, as at 21, and is provided on its exterior with any desired number of annular or peripheral fianges 22, which move in annular grooves 23 within the housing 7 for the purpose of preventing longitudinal The feeding-nut 18 is also provided centrally between its ends with peripheral gear-teeth 24, which mesh with and receive motion from a pinion 25, mounted in the housing 7. The pinion 25 is carried on a tubular hub 26, journaled inthehousing, and is provided interiorly with a feather 27, `which enters a groove 28 in a` removable rod 29, which passes through said hub. The rod 29 is mounted near its rear end ,in a bearing 29, Figs. 1() and 11, on the casing and projects beyond.

. the rear end of the machine, where it is provided `with a crankBO for operating it. This rod may he made throughout its length with the groove 28 forthe reception of the feather' 27, or, if desired, it may be made angular and the bore of the hub made of a similar shape to. accommodate it. Thebarrel 2Q carries the drill-operating devices, as will be hereinafter explained, andthe purpose of the mechanismjust described is to provide means for moving said barrel forwardly to feed the drill. itis apparent that when the rod 29 is turned motion will bey transmitted Vthrough the pinion A25 to the teeth 24 on the feeding-nut 18 and that the threaded interior of the latter meshing-With the threaded exterior ofthe barrel will transmit motion to the latter; but to cause such transmission of mot-ion'to effectthe longitudinal feeding movement of the barrel, provision must be made to prevent the turning of the latter. For this reason the barreli is provided with longitudinal grooves 31, into .which flanges or feathers 32, secured within the housing 7, project. l prefer to employ several such grooves and flanges or feathers, so as to permit the barrel to befmounted in different positions.

Y By the provision of the split feeding-nut mounted within atwo-part housing held together bly clamping means I am enabled to readily adjust the nut for wear. Furthermore, by. this. construction, each time the barrel is put in place the fit of the parts will be accuratelymade, eliminating lost motion during wear, guiding the drill-point (which is carried by said barrel) with accuracy, preventing noise, and giving great solidity to the whole action of the machine.

A sleeve 33 i's screwed into the forward end of the.l barrel and provided throughout a port-ion of its length with a bushing 34 for the accommodation of a dri ll-rod 35. The innen end of the sleeve 33 is enlarged somewhat and provided with a peripheral flange 36, Whichmay bearagainstthe inner wall of the barrel.v A split or two-part disk 37 islocated atrthe innerend ofthe sleeve 33 and provided with a flange 38, interlocking with the inner end of said sleeve. tion of the sleeve 33 is made interiorly with an annular recess 39, within which two series 40 41 of clutch-rollers are located.

Within the two annular series of clutchrollers toothed rings 42 43 are located, the rollers being located between the teeth of said rings and the periphery of the rings being inclined between each two teeth. The

two series of clutch-rollers and the two toothed rings are separated by a ring 44. The wall of the recess 39, the clutch-rollers, and the toothed rings constitute two clutches and are so disposed thatone will be a righthand clutch and the other a left-hand clutch. The rings 42 43 of the clutches are provided with internal feathers 45, the feathers ofthe ring 42 entering spiral grooves 46 in the drill-rodand the feathers 45 of the ring 43 moving in straight grooves 47 in the drillrod, or vice versa, according to desired direction of rotation of the drill.- From this construction it will be seen that when the drillrod is moved forwardly the feathers 45 of clutch-ring 42 moving inthe spiral grooves 46 will cause said. ring to turn in a backwardfdirection, so `that the clutch-rollers 40 will not bind between said ring and the Wall of the recess 39. The clutch-ring 42 will therefore rotate freely and the drill-rod will be prevented Afrom turning by the feathers on the ring 43 moving through the straight grooves 47 said clutch being prevented from rotation by the wedging action of the rollers 41 between said ring and the wall of the recess 39. lhen the drill-rod is withdrawn, the reverse action takes place. The rearward movement of the drill-rod will tend to rotate the clutch-ring 42 in the reverse direction by the engagement of its feathers with the spiral groove 46; but the ring 42 will be prevented from rotating by the wedging of the rollers 40 between said ring and the wall of the recess 39, and consequently the drill-rod will be made to turnwhen it is beingwithdrawn, the clutch-ring 43l in .this case rotating freely.

A casing 48 is-secured to the rear end of the barrel 20 by means .of bolts 49, and these bolts also secure a head ,50 in the rearend of the barrel, said head being provided centrally with a sleeve 51 for supporting the rear end of the drill-reciprocating drill-rod, and within the sleeve 5.1 a bushing y52 is' provided for the accommodation of said drillrod.

The casing 48 is provided'with a lateral boss or sleeve 53, in which a bushing 54 is located to serve as one bearing for a transverse shaft 55,.having a crank or eccentric 56, located centrally withinthe casing, and one end ofthis shaft is provided with a fly-wheel 57. The opposite side of the casing 48 is provided with an opening large enough to The enlarged pory lOO lpermit the insertion of the shaft and its crank or eccentric 56, and -saidopening Ais surrounded by an `annular flange 58,- within which -afcast-iron sleeve 59 is secured by means of a s'et-'screw60or other fastening means, and said sleeve is provided with an vannularilange 61, abutting againstthe outer end of theflange 58.- A bronze bushing 62 is disposed within thel sleeve 59 and serves as the other bearing for the crank-shaft 55. Between the bronze bushingy 62 and the sleeve'59va sleeve 63 is mounted to turn, the

lower end of said sleeve" havinga shoulder 64 to abut against the lower end of the sleeve 59- and also having an undercut shoulder 65 to receive an annular ange at the outer end of the bronze bushing 62. The outer endof the'sleeve 63 is provided with an integral annular ilange 67, which constitutes a cover for a gear-casing 68, the latter being rigidly secured to said flange by means of bolts 69. From this construction it willbe seen that the gear-casing 68 is pivotally or revolubly connectedwith the casing 48 and that the sleeve 59 affords a long bearing for such connection. The end of the shaft 55 which projects into the gear-casing is somewhat contracted and threaded for the reception of a bevel-pinion 70, which latter is also secured to the shaft and -prevented from turning thereonby means of a key 71. The gear-casingis provided with bearings 72 73 (provided with bushings 74 75) for the re-` ception of a shaft' 76, havinga bevel-pinion 77 secured thereon and meshing with the pinion to transmitjmotion'thereto and to thecrank-shatt55. The yshaft 76 is made with a socket for the reception of a flexible shaft 77 driven from an electric or other motor. (Not shown.)

A yoke or pitman 78 is mounted at one end upon the crank-arm or eccentric 56 of the shalt 55, and the arms of said yoke or pitman pass lthrough slots 79 in the head 50 and terminate near the center of the drill-rod within the barrel 20 in a` cross-head 80, having an opening to receive the drill-rod. In rear oic its grooved portion the drill-rod is contracted somewhat to form a shoulder 81 and is covered at 82 by a loose removable tube intended to take wear ot the drill-rod, and with the tube-covered portion of the drill-rod the cross-head on the yoke or pitman engages, the contacting edges ot said cross-head with the drill-rod tube being slightly curved, as shown in Fig. 2, to permit said cross-head to rock slightly as the yoke or pitman 78 is operated by the eccentric 56. A metal disk 83 is placed on the contracted portion of the drill-rod and bears against the shoulder 81. A spring 84 encircles the drill-rod and bears at one end against a metal plate 85, between which and the disk 83 a leather washer 86 is placed. The other end of the spring 84 bears against a metal disk 87, between which between which and a disk 93 a leather washer 94 is placed'. The disk '93 is provided on its rear tace with an annular llange 95, having an interior beveled wall 96, against'which a series otbeveledblocks 97 is placed and preterably connected by a wire 98 through them. Each block 97 is provided with a shoulder 99 to engage a hollow or depression 100 inA the drill-rod. v

For the purpose of raising or lowering the barrel and the parts carried thereby I provide chains 101,` provided at their upper ends with hooks 102 to engage the upper end of the. standard 1. The lower ends ot' the chain will be placed around the housings or drillbody and hooks 103 at the lower extremities of said chains made to engage links of the chains above said housings. Afterloosening the clamps which secured the said'hou'sings in place thev barrel 20 'may be raised one end at a time and the hooks 102 moved from link to link of the chain. The chains might,

ifdesired, be attached to suitable devices on 95 chains aroundthe housings.

Various other slight. changes might! be madein the details of construction of my invention without departing from the spirit thereof or limiting its scope,and hence I do not wish to limit myself to the-precise details herein set forth.` I f Having Jully described my invention, what I claim as new, and desire to secure by Letters Patent, is- Y I 1. In a drill, the combination with a sectional housing, an externally-threaded barrel passing through the same and a drillrod carried by and longitudinally movable through said barrel, of a split feeding-nut mounted within the housing and engaging the threaded barrel and means for turning said nut.

2. In a drill, the combination with a housing made in two parts' hinged together, and a clamp engaging the free edges of said sections, of an externally-screw-threaded barrel passing through the housing, a longitudinally-split Jfeeding-nut disposed within the housing and engaging the threaded barrel and means for operating said nut, a drill-rod longitudinally movable through said housing, and means carried by the rear end of the barrel for operating the drill-rod.

3. In a drill, the combination with a housing, and a drill-body threaded externally from end to end and passing through the housing, a drill-rod independent of the barrel and carried in it, said housing having in- IOO IZO

terior annular grooves, ot a feeding-nut mounted within the housing and engaging the threaded barrel, flanges on `said nut and entering the grooves in the housing said -drillbody havingV external longitudinal grooves, flanges projecting romthe housing and entering said-longitudinal grooves, means for operating said nuta casing secured to the real-end of the barrel and means in said casingr'for reciprocating the drill-rod.

4. In a drill, the combination with a housing and an externally-threaded barrel mov-. able longitudinally therethrough, of a feeding-nut mounted within the housing and engag'ing the barrel to move it longitudinally, gear-teeth on said nut, a pinion mounted in` the housing and engaging said gear-teeth and means for operating saidipinion. y 5. In a drill, the combination with ahous. ing and an externally-threaded barrel pass-V ing through said housing, of a feeding-nut mounted within the housing and engaging said barrel to move it longitudinally,'gear teeth on said nut, a sleeve mounted inthe housing, gear-teeth onl said sleeve and mesh-- ing with the gear-teeth'on the feeding-nut and an operating-rod'removably attached to said sleeve for'turning it.

6. In a drill, the combination Witha drillrod having recesses and means for guiding it, of a disk mounted on said rod, an internallybeveled annular iiange on said disk, blocksl or wedges within said flange and engaging` the drill-rod in the recesses therein, another disk on the drill-rod, two springs encircling the drill-rod between said disks, a crankshaft, a pitrnan connected with the crankshaft and a cross-head on said pitman, vdis-A posed between said springs.

7'. In a drill, the combination with a barrel and a drill-rod mounted therein, of acasing secured to the barrel, a transverse crankshaft in the casing `and connected with the drill-rod, a lateral bearing on the casing for one yend of the crank-shaft, the casing havinga lar 'e opening in the side opposite saidlateral earing, an annular iiangearound-said opening, a gear-casing, a sleeve projectingl from said gear-casing and mounted to rotate Within Said-annular ange and Supportedby said first-mentioned casing,- a bushing Within said sleeve, for the-receptionof the crankshaft, a pinionsecured` to the.y crank-shaft within thegear-casing,- a second pinion in thel gear-casing-@meshingV with tlref-pinion on the crank-shaft, said t second pinion supported independently of the crank-shaft, and means for connecting a motor-withsaid secondpinion.

8. ln a-drill, the combination with a housing, of an externally-threaded cylindrical body portion passingr'therethrough, means engagingthe externalthreads of said body portionforeedingfthek latter,v a drill-rod lon- 'itudinally movable through the cylindrical ody portion, a separate casingsecured to the reary end o fsthe body portion, operating mechanism forthe drill-rodmounted in said casingandjconnected with said drill-rod and an external ydriving-shaft connected with Saddrvnaimehansm;

9. In,a.driljl, thecoinbination with abarrel-,anda drill-,rod therein, of a crank-shaft, a head in one` end of the barrel having slots, a sleeve on said head in which the drill-rod is guided and; a pitman connected with the crank-shaft, passingthrough .the slots in said head and connected -With the drill-rod.

10. In; a; drill, the combination with a drill-body, a drill-rod therein, ahousing at the rear endiof thedrill-body, journal-bearings lin said housing, bushings in s aid bearings, a4 crank-shaft mounted within said bushings and a connection between said crank-shaft and drill-rod, ofv a gear-casing having` a part mounted in said housing around the bushing therein, whereby the gear-casing will bev supported `by the housing independently of the crank-shaft, and gearing in said gear-casing for rotating the crank-shaft,

Intestimony whereof I have signed this specification in the presence of two subscribing witnesses.

THOMAS'EDGAR DAl/S.`

Witnesses:

JOHN DERTEL, C, J. CRABLE.4 

